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By most measures, the Paris climate talks last month were a success. In the end, 195 countries agreed to reduce their carbon emissions enough to limit global warming to 2.0°C. And rich nations agreed to pay poor countries that are vulnerable to climate change $100 billion per year by 2020. Separately, Bill Gates, along with a group of other wealthy individuals, pledged billions of dollars in new clean tech investments; 500 organizations agreed to purge their fossil fuels investments; 114 major companies committed themselves to emissions reduction targets; and 10 major cities announced plans for their own major carbon reductions.

This kind of progress has generated a lot of buzz and excitement, but several significant questions remain: Exactly where and how will this capital be invested? How will the carbon reductions be achieved and measured?

One important answer to these questions is that pension funds, insurance companies, college endowments and other big institutional investors should start to think differently about how to motivate the portfolio managers who run their money. How? By pricing carbon risk into the investment and asset management process and rewarding those who manage their assets for reducing carbon risk. Don’t wait for governmental or regulatory action, just set your own price and reduce your risk—now.

Carbon risk manifests in two forms. The first is the damage to humanity directly caused by greenhouse gas emissions. The second is the risk governments will introduce carbon taxes, cap and trade systems or other measures to prevent a climate catastrophe. Both impact investors, but the second will do so sooner and more dramatically than the first. In particular, the pioneering analyst group Carbon Tracker in London, has pointed out that such measures, if implemented, would have a significant negative impact across any investment portfolio that has not previously priced in this risk.

Investors constantly manage risk and allocate capital. They are paid to account for such things as interest rate risk, currency risk, country risk, and risk of default. They are asked to consider environmental, social and governance risks. But history suggests investors do a poor job of properly pricing systemic risks – such as the sub-prime crisis and carbon risk — into their investment decisions.

Large institutional investors commonly evaluate their portfolio managers based on performance against benchmarks. How those benchmarks are constructed dictates how they look at risk and allocate capital. If you want to incentivize them to invest explicitly in reducing carbon risk, which could include reducing emissions, then you should base some of their compensation on the degree to which their investments achieve that goal.

In the weeks since the global agreement, a growing number of investing institutions has asked the question: just how large is the carbon risk exposure in our investments? That is step one. Step two says, maybe we should assign some value to that risk. And step three becomes, how do I decrease my negative exposure and profit from it?

Virtually every investor and investment pool would do well to go through this process. How? By simply assigning an arbitrary price that reflects how much you value CO2 reductions and include it in your benchmark metrics for paying portfolio managers. To start, you can figure out how much carbon the companies in your portfolio are producing (it doesn¹t have to be perfect). Organizations like the Carbon Disclosure Project can help you figure this out. Then you set a target for how much you’d like to see carbon emissions reduced each year and multiple that by the carbon price you choose.

For example you might assign a price of $10/ton for carbon and at the end of the year for each ton saved you’d credit your managers in a way that treated that $10 exactly as if they had produced $10 more profit from the sale of an investment. Cut a 100,000 tons of carbon out of your portfolio and your managers get an extra $1 million toward their compensation benchmark. If you only see little carbon risk in your portfolio, your carbon price would be low; if you want higher reductions, you could set a higher price. But remember, you get what you pay for.

So what might you compensate your investment managers to do? Pay them to reduce your carbon risk by increasing your exposure to the following three types of investments:

1) Companies that have strong programs to reduce their own carbon exposure.

2) Technologies that directly reduce carbon, whether it’s renewable energy, efficiency, or more sustainable agricultural practices. These investments should increase in value as governments take action.

Such an effort can start small. Both Mr. Gates and other climate-related investment funds can test this idea by allocating a fraction of their venture capital or private equity portfolio to investment managers whose performance fees are based on both financial return and carbon reduction return (also measured in dollars based upon whatever carbon price and metrics the manager assigns). If this test succeeds it could be scaled across entire portfolios.

This opens up a whole new way of looking at investing. On a true risk-adjusted basis that takes carbon into account, investing in unsexy but solid businesses like sustainable palm oil farming or reducing leaking refrigerants (both which are massive contributors to climate change) may be as good as or better than investing, say, in Tesla.

Today, a lot of top investment talent is busy chasing unicorns. Instead, they could be building expertise in maximizing carbon return on investment. If their compensation includes a carbon metric, managers will be driven to uncover opportunities for greenhouse gas reduction while still making a financial return. Ultimately and most importantly, once investors start to voluntarily price their carbon risk, we will get a defacto market price for carbon without the need for government action.

Also, when investors focus on carbon risk, CEOs and management teams will get the message that their cost of capital will be based not only on profits but also on how they manage their carbon exposure. They will search for opportunities for immediate carbon reductions.

We hope the world’s leading investors will take this opportunity to show the market how much they value carbon reduction. It’s a simple step, but one with the potential to do more for climate change than a few billion dollars of new R&D investment ever could.

Martin L. Lagod is a Co-Founder and Managing Director at Firelake Capital. He serves on the board of the Advanced Energy Economy and is also a contributing writer for Resourcient, which promotes scalable investment in resource efficient businesses.